US8419408B2 - Extrusion mold for non-pneumatic multi-hole hollow tire - Google Patents

Extrusion mold for non-pneumatic multi-hole hollow tire Download PDF

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US8419408B2
US8419408B2 US11/912,421 US91242106A US8419408B2 US 8419408 B2 US8419408 B2 US 8419408B2 US 91242106 A US91242106 A US 91242106A US 8419408 B2 US8419408 B2 US 8419408B2
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mold
hole
flat
extrusion
pneumatic
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US11/912,421
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US20080193578A1 (en
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Mingjiang Wang
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Jiangsu Risingsun Tyre Co Ltd
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Individual
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Assigned to JIANGSU RISINGSUN TYRE CO., LTD. reassignment JIANGSU RISINGSUN TYRE CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WANG, MINGJIANG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/02—Solid tyres ; Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • B29L2030/006—Solid tyres

Definitions

  • the invention relates to a rubber extrusion mold, particularly an extrusion mold for non-pneumatic multi-hole hollow tires.
  • the third of tires is solid. Although they are not vulnerable to pricking, they are not elastic in use and need many materials. Therefore, it is a pressing task to produce a kind of non-pneumatic multi-hole hollow tires which can save materials and are elastic and not vulnerable to pricking. What matters is that appropriate rubber extrusion mold is not available.
  • the invention aims to provide an extrusion mold for non-pneumatic multi-hole hollow tires, which can be used for producing non-pneumatic, highly elastic and materials-saving tires.
  • the technological plan of the invention is as follows:
  • An extrusion mold for non-pneumatic multi-hole hollow tires characterized by consisting of a mold frame 1 and a mold core 2 , with one end of the mold frame 1 connected with the feeder of extruder and the other end connected with mold core 2 ; inside the mold frame 1 is provided a feeding passageway 3 , one end of which communicates with the feed inlet of the extruder's feeder and the other end of which communicates with the discharge hole 4 in the mold core 2 ; the discharge hole 4 is provided with several mold blocks 5 , which match the shape of the hollow holes in tires and are directly or indirectly connected with the wall of the discharge hole 4 through a thin-wall connection strap.
  • the invention has also taken the following technological measures:
  • the side on which the mold core 2 is connected with the mold frame 1 is provided with a boss 201 , which inserts into the feeding passageway 3 of the mold frame 1 .
  • the number of the said mold blocks 5 matching the shape of the hollow holes in tires is not less than 2.
  • the length of the discharge hole 4 shall not be less than 10 mm so that the rubber can be efficiently molded when extruded.
  • the structure is simpler and the manufacture is easy.
  • the parts of the extrusion mold are reduced to the greatest extent by increasing the mold blocks, the shape of which is the same as that of the holes molded finally, in the extrusion hole. This is unmatched by the molds of the same kind and completely solves the problem of the difficult location of the mold core of the current extrusion molds.
  • the tires produced according to the invention are characterized in that they are non-pneumatic, safe, reliable and not vulnerable to pricking.
  • Tires of many different kinds can be produced by varying the number and shape of the mold blocks.
  • FIG. 1 is the structural schematic view of the invention.
  • FIG. 2 is the top structural schematic view of FIG. 1 .
  • An extrusion mold for non-pneumatic multi-hole hollow tires only consisting of two parts, mold frame 1 and mold core 2 ; with the inside of the mold frame 1 provided with a feeding passageway 3 and the mold core 2 provided with a discharge hole 4 which forms hollow hole needed after the rubber passes through; for the purpose of ensuring the molding effects, the height of the discharge hole shall not be less than 10 mm, with one end of the mold frame 1 connected with the extruder's feeder and the other end connected with the mold core 2 ; the side on which the mold core 2 is connected with the mold frame 1 is provided with a boss 201 (The boss 201 can also be left out in the specific implementation of the invention, i.e., the side on which the mold core 2 is connected with the mold frame 1 is flat), which inserts into the feeding passageway 3 located inside the mold frame 1 , with one end of the feeding passageway 3 communicating with the feed inlet of the extruder's feeder and the other end communicating with the discharge hole 4 in the mold core 2 ; inside the discharge hole 4 are located
  • Several lightening holes 7 may be made in the mold frame 1 so as to reduce its weight.
  • the thin-wall connection strap 6 shall be as thin as possible, preferably less than 1-2 mm, so that its thin-strip passageway formed in tires during the process of extrusion molding will automatically disappear during the cooling process after the removal of the rubber out of the mold.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Tyre Moulding (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Tires In General (AREA)

Abstract

The invention discloses an extrusion mold for non-pneumatic multi-hole hollow tires, which can be used for producing the hollow tires which are non-pneumatic, highly elastic and materials-saving and is characterized by consisting of the mold frame (1) and the mold core (2), with one end of the mold frame (1) connected with the extruder's feeder and the other end connected with the mold core (2); inside the mold frame (1) is provided a feeding via (3), one end of which communicates with the feed inlet of the extruder's feeder and the other end communicates with the discharge hole (4) of the mold core (2); the discharge hole (4) is provided with several mold blocks (5), which match the shape of the hollow holes in the tires and are directly or indirectly connected with the wall of the discharge hole (4) through a thin-wall connection strap (6).

Description

CROSS REFERENCE TO THE RELATED PATENT APPLICATION
This patent application is the National Stage of PCT/CN2006/000657, filed on Apr. 12, 2006, which claims foreign priority to Chinese patent application No. 200510039108.2, filed on Apr. 26, 2005.
FIELD OF THE INVENTION
The invention relates to a rubber extrusion mold, particularly an extrusion mold for non-pneumatic multi-hole hollow tires.
BACKGROUND OF THE INVENTION
Currently, there are mainly three types of tires. One type of the tires includes the inner tube, which is charged, and the cover tire. This kind of structure is the most common but the shortcoming is that usually the inner tube can no longer be used once pricked in use and that they have to be manufactured through two different processes. The second type of tire is single-hole tire without inner tube, such as the tires without inner tube used for cars. This type of tire also needs charging before use and has to be replaced or repaired once pricked. Besides, the installation is so complicated that special tools are needed. And these tires have higher requirements of the wheel hubs. The third of tires is solid. Although they are not vulnerable to pricking, they are not elastic in use and need many materials. Therefore, it is a pressing task to produce a kind of non-pneumatic multi-hole hollow tires which can save materials and are elastic and not vulnerable to pricking. What matters is that appropriate rubber extrusion mold is not available.
SUMMARY OF THE INVENTION
The invention aims to provide an extrusion mold for non-pneumatic multi-hole hollow tires, which can be used for producing non-pneumatic, highly elastic and materials-saving tires.
The technological plan of the invention is as follows:
An extrusion mold for non-pneumatic multi-hole hollow tires, characterized by consisting of a mold frame 1 and a mold core 2, with one end of the mold frame 1 connected with the feeder of extruder and the other end connected with mold core 2; inside the mold frame 1 is provided a feeding passageway 3, one end of which communicates with the feed inlet of the extruder's feeder and the other end of which communicates with the discharge hole 4 in the mold core 2; the discharge hole 4 is provided with several mold blocks 5, which match the shape of the hollow holes in tires and are directly or indirectly connected with the wall of the discharge hole 4 through a thin-wall connection strap.
The invention has also taken the following technological measures:
The side on which the mold core 2 is connected with the mold frame 1 is provided with a boss 201, which inserts into the feeding passageway 3 of the mold frame 1.
The number of the said mold blocks 5 matching the shape of the hollow holes in tires is not less than 2.
H, the length of the discharge hole 4 shall not be less than 10 mm so that the rubber can be efficiently molded when extruded.
The beneficial effects of the invention are as follows:
1. Appropriate producing molds are provided for the production of the non-pneumatic multi-hole hollow tires, which is favorable for the popularization and mass production of that kind of tires.
2. The structure is simpler and the manufacture is easy. The parts of the extrusion mold are reduced to the greatest extent by increasing the mold blocks, the shape of which is the same as that of the holes molded finally, in the extrusion hole. This is unmatched by the molds of the same kind and completely solves the problem of the difficult location of the mold core of the current extrusion molds.
3. The tires produced according to the invention are characterized in that they are non-pneumatic, safe, reliable and not vulnerable to pricking.
4. Tires bursting accidents on freeways, which serious jeopardize driving safety, will not happen.
5. With many uses, it can be used for the production of different kinds of tires. Tires of many different kinds can be produced by varying the number and shape of the mold blocks.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is the structural schematic view of the invention.
FIG. 2 is the top structural schematic view of FIG. 1.
 DETAILED DESCRIPTION OF THE INVENTION
The invention will be further described in conjunction with the drawings and embodiments.
Embodiment 1 As Shown in FIG. 1 and FIG. 2
An extrusion mold for non-pneumatic multi-hole hollow tires, only consisting of two parts, mold frame 1 and mold core 2; with the inside of the mold frame 1 provided with a feeding passageway 3 and the mold core 2 provided with a discharge hole 4 which forms hollow hole needed after the rubber passes through; for the purpose of ensuring the molding effects, the height of the discharge hole shall not be less than 10 mm, with one end of the mold frame 1 connected with the extruder's feeder and the other end connected with the mold core 2; the side on which the mold core 2 is connected with the mold frame 1 is provided with a boss 201 (The boss 201 can also be left out in the specific implementation of the invention, i.e., the side on which the mold core 2 is connected with the mold frame 1 is flat), which inserts into the feeding passageway 3 located inside the mold frame 1, with one end of the feeding passageway 3 communicating with the feed inlet of the extruder's feeder and the other end communicating with the discharge hole 4 in the mold core 2; inside the discharge hole 4 are located several mold blocks 5 (There are more than two mold blocks and there are five mold blocks in this embodiment, as shown in FIG. 2), which match the shape of the hollow holes in tires and can either be directly connected with the wall of the discharge hole 4 through a thin-wall connection strap 6 or indirectly connected with the wall of the discharge hole 4 after being interconnected.
Several lightening holes 7 may be made in the mold frame 1 so as to reduce its weight.
The thin-wall connection strap 6 shall be as thin as possible, preferably less than 1-2 mm, so that its thin-strip passageway formed in tires during the process of extrusion molding will automatically disappear during the cooling process after the removal of the rubber out of the mold.

Claims (5)

What is claimed is:
1. An extrusion mold for non-pneumatic multi-hole hollow tires comprising:
a mold core;
a mold frame, with one end for connecting with an extruder's feeder and other end for connecting with the mold core, the mold frame has a feeding passageway, which communicates a feed inlet of the extruder's feeder at one end and the mold core at other end;
the mold core consisting of a flat cylinder having one flat discharge hole, flat multi-mold blocks matching the multi-holes in the non-pneumatic multi-hole hollow tire and flat thin-wall connection straps, the multi-mold blocks being connected with a wall of the discharge hole and fixed therein by the flat thin-wall connection straps respectively, the flat discharge hole, flat multi-mold blocks and flat thin-wall connection straps defining a molding hole for molding the non-pneumatic multi-hole hollow tire; thin-strip shaped gaps formed in tire during a process of extrusion molding will be automatically disappear during cooling process after removal of the tire out of the mold;
the flat mold core is movably fixed on a discharge end of the mold frame.
2. The extrusion mold for non-pneumatic multi-hole hollow tires according to claim 1, wherein a side of the mold core facing the mold frame is provided with a boss, the boss is inserted into the feeding passageway of the mold frame.
3. The extrusion mold for non-pneumatic multi-hole hollow tires according to claim 1, wherein the number of the plurality of mold blocks is two mold blocks.
4. The extrusion mold for non-pneumatic multi-hole hollow tires according to claim 1, wherein H, the length of the discharge hole is not less than 10 mm.
5. The extrusion mold for non-pneumatic multi-hole hollow tires according to claim 1, wherein a thickness of each thin-wall connection strap is less than 1-2 mm.
US11/912,421 2005-04-26 2006-04-12 Extrusion mold for non-pneumatic multi-hole hollow tire Active 2027-05-13 US8419408B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200510039108 2005-04-26
CN200510039108.2 2005-04-26
CNB2005100391082A CN100553936C (en) 2005-04-26 2005-04-26 Aeration free multi hole hollow type extrusion mould
PCT/CN2006/000657 WO2006114041A1 (en) 2005-04-26 2006-04-12 An extruding die for a non-inflatable multi-hole hollow tyre

Publications (2)

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US20080193578A1 US20080193578A1 (en) 2008-08-14
US8419408B2 true US8419408B2 (en) 2013-04-16

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CN (1) CN100553936C (en)
WO (1) WO2006114041A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10166732B2 (en) 2013-06-15 2019-01-01 Camso Inc. Annular ring and non-pneumatic tire
US10953696B2 (en) 2015-02-04 2021-03-23 Camso Inc Non-pneumatic tire and other annular devices
US11999419B2 (en) 2015-12-16 2024-06-04 Camso Inc. Track system for traction of a vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109049607B (en) * 2018-09-19 2020-04-28 江苏江昕轮胎有限公司 Non-inflatable hollow tyre shaping mould
US20210178816A1 (en) * 2019-12-16 2021-06-17 Antego Tire & Wheel, Inc. Systems and methods for forming a multi-core semi-pneumatic tire

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US1152978A (en) * 1912-11-27 1915-09-07 Vernon Royle Tubing-machine.
US1725959A (en) * 1929-08-27 Extruding bib
US2705669A (en) * 1952-07-02 1955-04-05 Eutectic Welding Alloys Method and tool for shaping thermoplastic materials
US2952871A (en) * 1958-03-04 1960-09-20 Union Carbide Corp Flow path compensator
US3549737A (en) * 1967-11-28 1970-12-22 Herbert C Schulze Forming articles of asbestos-cement
US4298564A (en) * 1977-05-04 1981-11-03 Ngk Insulators, Ltd. Die for extruding a honeycomb structural body and a method of extruding the same
US5807590A (en) * 1997-05-15 1998-09-15 Ishikawa; Tokitsugu Extruding die for a honeycomb structure

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US4655987A (en) * 1982-10-12 1987-04-07 Guillermo Zertuche Method and apparatus for extruding tubular articles having several conduits
CN2162375Y (en) * 1993-01-04 1994-04-20 王明江 No-aerate buffer tyre
JPH07237259A (en) * 1994-02-28 1995-09-12 Bridgestone Corp Fish tail-shaped head of rubber extruding machine and extrusion molding method of rubberlike member by making use of this head
JP3213514B2 (en) * 1995-07-13 2001-10-02 住友ゴム工業株式会社 Elastomer extrusion equipment
JP3497311B2 (en) * 1995-12-26 2004-02-16 本田技研工業株式会社 Manufacturing method of tire tube containing sealant
US8192663B2 (en) * 2002-02-05 2012-06-05 Pirelli Pneumaticai S.P.A. Method for manufacturing a tyre and extruder for producing a semi-finished elastomeric product
CN1583400A (en) * 2004-06-02 2005-02-23 王明江 Manufacturing process for non-aerating hollow tyre and special mould core

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1725959A (en) * 1929-08-27 Extruding bib
US1152978A (en) * 1912-11-27 1915-09-07 Vernon Royle Tubing-machine.
US2705669A (en) * 1952-07-02 1955-04-05 Eutectic Welding Alloys Method and tool for shaping thermoplastic materials
US2952871A (en) * 1958-03-04 1960-09-20 Union Carbide Corp Flow path compensator
US3549737A (en) * 1967-11-28 1970-12-22 Herbert C Schulze Forming articles of asbestos-cement
US4298564A (en) * 1977-05-04 1981-11-03 Ngk Insulators, Ltd. Die for extruding a honeycomb structural body and a method of extruding the same
US5807590A (en) * 1997-05-15 1998-09-15 Ishikawa; Tokitsugu Extruding die for a honeycomb structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10166732B2 (en) 2013-06-15 2019-01-01 Camso Inc. Annular ring and non-pneumatic tire
US11014316B2 (en) 2013-06-15 2021-05-25 Camso Inc. Annular ring and non-pneumatic tire
US10953696B2 (en) 2015-02-04 2021-03-23 Camso Inc Non-pneumatic tire and other annular devices
US11999419B2 (en) 2015-12-16 2024-06-04 Camso Inc. Track system for traction of a vehicle

Also Published As

Publication number Publication date
CN1686700A (en) 2005-10-26
CN100553936C (en) 2009-10-28
WO2006114041A1 (en) 2006-11-02
US20080193578A1 (en) 2008-08-14

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